21mm Dia. Contact Reticle, Metric Concentric Square -- NT64-850
from Edmund Optics Inc.

These glass reticles offer greater stability than film reticles which can bend, warp, and easily be damaged. Patterns are low reflection chrome deposition for high contrast and easy readability. Markings are on the outside of the reticle, so the scales are always in direct contact with the object... [See More]

  • Reticle Type: Other; Metric Concentric Squares
  • Thickness: 0.0898
  • Diameter / Side Length: 0.8268
  • Centering: 0.0098
70.0110
from Rolyn Optics Company

Reticles. Reticle patterns with black lines on a clear background. Concentric Squares 4, 7, 10mm sides [See More]

  • Reticle Type: Other; Concentric Squares
  • Diameter / Side Length: 0.8268